A member of the team, Raffaella Righetti of Texas A&M Engineering University, has therefore developed a portable ultrasonic scanner that can give instant three-dimensional images of a bone.
2
这一技术需要志愿者躺在巨大的固定的扫描器中，志愿者被要求观察图像或完成简单的任务。
This technique requires volunteers to lie still in a large, immobile scanner. Volunteers are then asked to look at images or to perform simple tasks.
3
因为水、植被及矿藏各有其独特的多光谱光图像，所以，扫描器能辨认出地球的不同特征。
Since water, vegetation, and mineral each have unique identifying patterns in multispectral light, the scanner can identify differing features of the earth.
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